<div class="row">
    <div class="col-lg-12">
        <div class="card">
            <div class="card-header">
                订阅的邮件
            </div>
            <div class="card-body">
                <textarea class="form-control" style="height: 500px;"><?php $i=0; foreach ($subscriptions as $subscription) {
                        if($i==0){
                            echo $subscription['email'];
                        }else{
                            echo ';'.$subscription['email'];
                        }
                        $i++;
                    } ?></textarea>
            </div>
        </div>
    </div>
</div>